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Current content: 156 511 693 patent documents

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200 241 new documents added

1 026 356 documents amended

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EP 1295929 A2 20030326 - Anisotropic polymer film

Title (en)

Anisotropic polymer film

Title (de)

Anisotroper Polymerfilm

Title (fr)

Film polymère anisotropique

Publication

EP 1295929 A2 20030326 (EN)

Application

EP 02019791 A 20020905

Priority

EP 02019791 A 20020905
EP 01122567 A 20010925

Abstract (en)

The invention relates to an anisotropic polymer film comprising a polymerised chiral liquid crystal material with helically twisted structure and having areas with different helical twist sense, to methods of its preparation, and to its use for decorative or security applications.

IPC 1-7

C09K 19/54; G02B 5/30; G02F 1/137; C09K 19/38

IPC 8 full level

C09K 19/38 (2006.01); G02F 1/137 (2006.01)

CPC (source: EP US)

B42D 25/364 (2014.10 - EP US); C09K 19/38 (2013.01 - EP); C09K 2219/03 (2013.01 - EP)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

EP 1295929 A2 20030326; EP 1295929 A3 20040714; EP 1295929 B1 20090107

DOCDB simple family (application)

EP 02019791 A 20020905